Development and prospectives of lightweight high strength concrete using lightweight aggregates

Sifan, Mohamed; Nagaratnam, Brabha; Thamboo, Julian; Poologanathan, Keerthan; Corradi, Marco

doi:10.1016/j.conbuildmat.2022.129628

Cited by 44 publications

(10 citation statements)

References 73 publications

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“…LWHSC has economic benefits such as its light self-weight, high strength, and excellent possible durability and creep resistance [1,2]. Generally, LWHSC is commonly recognized as having a strength greater than 40 MPa with a density of less than 1950 kg/m 3 and is sensitive to its material constituents and preparation [3]. LWHSC mixed with fly ash and volcanic slag has an increase in its resistance to chloride diffusivity and shrinkage [4,5].…”

Section: Introductionmentioning

confidence: 99%

“…Shale and clay ceramsite were incorporated into LWHSC as lightweight aggregates. Evangelista et al [25] found LWHSC with a compressive strength of up to 64.3 MPa, a dry density of up to 1.77 kg/dm 3 , and an efficiency factor of up to 36.3 MPa•dm 3 /kg after using expanded shale in place of coarsely expanded clay aggregate. Compared with clay ceramsite, shale ceramsite increased the LWHSC strength [25,26].…”

Section: Introductionmentioning

confidence: 99%

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Experimental Investigation into Lightweight High Strength Concrete with Shale and Clay Ceramsite for Offshore Structures

Li,

Fan

et al. 2024

Sustainability

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To develop lightweight high-strength concrete (LWHSC) for offshore structures in a harsh seawater environment, LWHSC with shale and clay ceramsites was designed. LWHSC was experimentally investigated in terms of density, compressive strength, and durability in a coastal environment. Then, its feasibility for offshore structures was also assessed. The results show that the compressive strength and oven dry density of LWHSC appropriately improve with increases in cement content, while they are reduced by the replacement of shale ceramsite with clay ceramsite. The compressive strength of LWHSC also increases first and then decreases with an increase in the pre-wetting of shale and clay ceramsites. Their optional pre-wetting time is about 0.5 h. LWHSC exhibits a higher brittleness compared with conventional concrete. LWHSC has increases in the resistances of freeze–thaw, carbonization, water penetration, and chloride penetration when the shale and clay ceramsite light aggregates decrease in the concrete. The LWHSC prepared in this paper is suitable for the harsh seawater environment of offshore oil platforms but is limited to the southern region where there is no requirement for the freeze–thaw resistance of concrete. The results of this study can provide some reference for the application of LWHSC in offshore structures and other similar aspects of engineering.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental Investigation into Lightweight High Strength Concrete with Shale and Clay Ceramsite for Offshore Structures

Li,

Fan

et al. 2024

Sustainability

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“…High-strength concrete is being used more widely due to the increasing demands of modern construction [ 1 , 2 ]. Compared with ordinary concrete, high-strength concrete has a lower water-binder ratio (typically ≤ 0.4) due to the addition of high-efficiency water-reducing agents [ 3 , 4 , 5 ].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Water-Binder Ratio on the Autogenous Shrinkage of C50 Mass Concrete Mixed with MgO Expansion Agent

et al. 2023

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The high adiabatic temperature rise and low heat dissipation rate of mass concrete will promote rapid hydration of the cementitious material and rapid consumption of water from the concrete pores, which may significantly accelerate the development of concrete autogenous shrinkage. In this study, the effect of the water-binder ratio on the autogenous shrinkage of C50 concrete mixed with MgO expansion agent (MEA) was explained with respect to mechanical properties, pore structure, degree of hydration, and micromorphology of the concrete based on a variable temperature curing chamber. The results show that the high temperature rise within the mass concrete accelerates the development of early (14 d) autogenous shrinkage of the concrete, and that the smaller the water-binder ratio, the greater the autogenous shrinkage of the concrete. With the addition of 8 wt% MEA, the autogenous shrinkage of concrete can be effectively compensated. The larger the water-binder ratio, the higher the degree of MgO hydration, and in terms of the compensation effect of autogenous shrinkage, the best performance is achieved at a water-binder ratio of 0.36. This study provides a data reference for the determination of the water-binder ratio in similar projects with MEA.

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“…Alot of researchers ignorant chlorides penetration cement to be used below Ground level. This phenomenon is wrong because SRC cement can not get durable concrete and may be get higher compressive strength [4].…”

Section: Introductionmentioning

confidence: 99%

Effects of Five Sources of Mixing Water on Durability of Concrete

Elshami

2023

Preprint

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This paper presents the experimental approach and the first results obtained as a result of the effect of five Sources of mixing water on produce more durable concrete. Five types of water were used, namely simulated acid rain (AR), Rain water (RW), tap water (TW), Zamzam water (ZW) and sea water (SW) as mixing water for ordinary portland cement concrete OPCC. The durability of these different types of water were tested toward their capacity to prevent the rebar corrosion. The results of workability, pH value, compressive strength, chlorides penetration and microstructure of different specimens mixed with each type of water were compared with those mixed with tap water (TW).

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Development and prospectives of lightweight high strength concrete using lightweight aggregates

Cited by 44 publications

References 73 publications

Experimental Investigation into Lightweight High Strength Concrete with Shale and Clay Ceramsite for Offshore Structures

Experimental Investigation into Lightweight High Strength Concrete with Shale and Clay Ceramsite for Offshore Structures

Effect of the Water-Binder Ratio on the Autogenous Shrinkage of C50 Mass Concrete Mixed with MgO Expansion Agent

Effects of Five Sources of Mixing Water on Durability of Concrete

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